feat(line-chart): use individual bars instead of bardata for area paints
feat(line-chart): use individual bars instead of bardata for area paints

imaNNeoFighT/fl_chart,imaNNeoFighT/fl_chart,imaNNeoFighT/fl_chart,imaNNeoFighT/fl_chart,imaNNeoFighT/fl_chart,imaNNeoFighT/fl_chart,imaNNeoFighT/fl_chart